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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [setjmp-2.c] - Rev 307
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/* PR middle-end/17813 */ /* Origin: Tom Hughes <tom@compton.nu> */ /* { dg-do run { target i?86-*-linux* x86_64-*-linux* } } */ /* { dg-options "-O -fomit-frame-pointer" } */ /* { dg-options "-O -fomit-frame-pointer -march=i386" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */ #include <setjmp.h> #include <signal.h> #include <stdlib.h> static jmp_buf segv_jmpbuf; static void segv_handler(int seg) { __builtin_longjmp(segv_jmpbuf, 1); } static int is_addressable(void *p, size_t size) { volatile char * volatile cp = (volatile char *)p; volatile int ret; struct sigaction sa, origsa; sigset_t mask; sa.sa_handler = segv_handler; sa.sa_flags = 0; sigfillset(&sa.sa_mask); sigaction(SIGSEGV, &sa, &origsa); sigprocmask(SIG_SETMASK, NULL, &mask); if (__builtin_setjmp(segv_jmpbuf) == 0) { while(size--) *cp++; ret = 1; } else ret = 0; sigaction(SIGSEGV, &origsa, NULL); sigprocmask(SIG_SETMASK, &mask, NULL); return ret; } int main(int argc, char **argv) { is_addressable(0x0, 1); return 0; }
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